Combined sash-fastener and burglar-alarm



(ModeL) M. BOURKE. Combined Sash Fastener and Burglar Alarm. No. 229,856. Patented July 13, 1880.

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' PEIERS, PHQTO-LUHOGRAPMER, WASMIRG OK. o t.

UNITED STATES PATENT OFFICE.

MARTIN BOURKE, OF YOUNGSTOWN, OHIO.

COMBINED SASH-FASTENER AND BURGLAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 229,856, dated July 13, 1880.

Application filed April 12, 1880.

To all whom it may concern 'Be it known that Lll/lARTIN BOURKE, a citizen of the United States, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in Combined Sash-Fastener and Burglar-Alarm; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, makin g a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the'drawings is afront elevation of a window-frame, showing the upper and lower sashes in an opened position and locked together. Fig. 2is a side elevation in section. Fig. 3 is a top-plan view-of the casing, the spring, and bolt for lockin g the sashes to the window-frame. Fig. 4 is a detail view of the plate with spring and'dog for preventing the removal or turning of the screw-bolt which looks the sashes together. Fig. 5 is an end view of the screwbolt, and Fig. 6 a perspective view of the end of the key or wrench for unscrewing the bolt.

This invention has relation to certain new and valuable improvements in window-sash fastenings inconnection with an alarm, whereby the sashes may be securely locked in an opened position and to each other, and so combined with an alarm and means for securing and locking the sashes to the window-frame that should the sashes in their opened and locked position be raised either up or down, an alarm will be sounded, and at the same moment the sashes be securely locked in their opened position to the window-frame, thereby insuring the ventilation of the apartment going on as before by the passage of foul or vit-iated air and fresh air from and to the apartment at the top and bottom of the window.

In the accompanying drawings, A represents the window-frame, and B G the sashes, of the usual construction. The upper sash, B,

has two annular. openings, ab, to receive the smooth end of a screw-threaded bolt, D, so that when said bolt-engages with the opening a the sashes B G will be locked together and in an opened position, whereby the room may be ventilated by allowing the foul or vitiated air to escape through the top of the window,

(ModeL) while the fresh air passes in at the bottom. When the sashes are closed the screw-bolt engages with the lower opening, I), which securely locks them closed against the window-frame A.

To prevent the sashes from being unlocked when either in an opened or closed position by the turning and withdrawing of the bolt D by burglars or other dishonest persons, the head of said bolt is formed with shoulders c and a central guide-pin, d, for the key or wrench E. The'plate e, secured to the upper end of the sash Q, and through which the bolt D passes, has pivoted to it a dog, f, which is retained against one of the shoulders c by a spring, g, and prevents the bolt from being turned except by the key or wrench E. This key or wrench has at its end two shanks, h, in form to correspond to the form of the spaces 2' on the head of the bolt D. Now, when this is fitted to the head of the bolt so the pin 61 will enter the hole in the end of the key or wrench and the shanks h fill up the spaces 1', the circle will be completed, and thus the bolt D may be unscrewed without interference from the dog f.

Any suitable form of dog may be employed, and a spiral or other form of spring may be used, as found desirable, and it is preferred that the openings at b be lined with metal.

Acasing, F, is secured to the sash O, the same being cast at its upper end with a cap, 70, to cover the plate 0 and protect the bolt D and spring pawl or dogf from being tampered with. The casing]? has a pin, 1, around which is coiled a spring, m, one end of which bears against the side of the casing and the other connects with a bolt, G, which is forced out through an opening in the side of the casing by the spring at, to engage with either one of the openings a 0 in the side of the windowframe A.-

The cover 19 of the casing has an elongated opening, through which passes the hammer q, secured to the bolt G, so that when .the bolt is forced out by the spring the hammer will sound the alarm. To the cover 19 is pivoted a clasp, r, retained against the plate 8 by a spring, t, of any suit-able form.

In describing the manner of operating my improved sash-fastener and alarm, its advantages will readily present themselves.

It frequently becomes necessary to have a room properly ventilated in the night-time as well as during the day, and to obtain a successful ventilation of the apartment it is essential that the windows be open both at the top and bottom, in order that the foul or vitiated air will more effectually escape from the upper part of the room through the opening at the top of the window while the fresh air is passing into the room through the open space at the bottom of the window. To lock the sashes B U in this opened position, so that the foul or vitiated air will pass out at the top and the fresh air pass in at the bottom of the window, the two sashes are moved so that the end of the screw-bolt D and opening (L will register with each other, when the bolt may be screwed into the opening, which firmly and securely locks the two sashes together, as illustrated in Figs. 1 and 2. Now, when the sashes B G are thus locked the end of the bolt G, which has a bevel, it, rests against the frame A between the openings 11 o. A cap is now placed between the clasp r and plate s, which is held against the plate by the spring t pressing against the clasp. In this position the sashes are locked and the alarm set to remain over night.

Now, should a burglarorotherperson attempt to either raise or lower the sashes from the outside of the window, the bevel end of the bolt G will admit of its passing in line with one of the two openings n 0, at which moment the bolt G, by the spring m, is forced into the opening. As the bolt G is thus being acted upon the hammer qis violently brought against the clasp r, which will cause the explosion of the cap and give the alarm, at the same time looking the sashes to the window-frame by the bolt G entering one of the openings n 0.

It should be noticed that when the sashes B C are locked in an open position it is impossible from the outside of the window to close the sashes either at the top or bottom, as when moved either down or up the distance equal to the distance between the openings n 0 the sashes will be securely locked to the window-frame, where they remain, the foul or vitiated and the fresh air passing in and out of the apartment at the top and bottom of the window, as usual.

If for any reason it is found desirable to have the window open at the'top or at the bottom only, additional openings r may be made in the frame A for the reception of the bolt G.

The sashes B C are supported in the position as shown in Fig. 1 by the bevel end of the bolt, as. were the end perfectly flat, the weight of the sashes would carry the boltinto the opening 0; but by having the end beveled sufficiently to clasp that portion of the frame A between the two openings no it sustains the sashes against their own weight.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The upper and lower sashes of a windowframe, provided with means, substantially as described, for locking them together and in an opened position, in combination with an alarm and means, substantially as shown and described, for operating it, and at the same time locking the sashes in their opened position to the window-frame when moved either up or down, substantially as and for the purpose set forth.

2. The window-frame A, having openingsn o, and the bolt G, having beveled end it and the spring m, in combination with an alarm connected with the bolt, substantially as described, whereby the sashes are locked to the frame at the moment the alarm is sounded, substantially as set forth.

3. The sash B, having screw-openings a b, in combination with the sash 0, dog f, and spring g, and the screw-bolt D, with the shoulders c and central guide-pin, 11, substantially as and for the purpose set forth.

4. The frame A, having openings 12 o, the spring-bolt G, hammer q, clasp r, and plate 8, in combination with the sashes B (J, and means for locking them either closed or opened and to each other, substantially as and for the purpose specified.

5. The screw-bolt D, for locking the sashes either closed or opened and to each other, in combination with the means, substantially as described, for locking the sashes to the window-frame and sounding an alarm, for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

MARTIN BOURKE.

Witnesses Geo. R. PORTER, NAT. E. OLIPHANT. 

